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Molodets [167]
3 years ago
12

Could you please help me to solve this query??

Mathematics
1 answer:
galina1969 [7]3 years ago
3 0

Answer:

Show me problem

Step-by-step explanation:

I need a problem to solve it

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Construct a​ 95% confidence interval for the population standard deviation sigma of a random sample of 15 crates which have a me
Ad libitum [116K]

Answer:

There is a 95% confidence that the sample has a mean between 158.92 pounds and 171.48 pounds

Step-by-step explanation:

Given that mean (μ) = 165.2 pounds, standard deviation (σ) = 12.4 pounds, sample size (n) = 15 crates. Confidence (C) = 95% = 0.95

α = 1 - C = 1 - 0.95 = 0.05

α/2 = 0.05/2 = 0.025

The z score of α/2 corresponds to the z score of 0.475 (0.5 - 0.025) which is 1.96. z_{\frac{\alpha}{2} }=1.96

The margin of error (E) is given by:

E=z_{\frac{\alpha}{2} }\frac{\sigma}{\sqrt{n} } =1.96*\frac{12.4}{\sqrt{15} }= 6.28

The confidence interval = μ ± E = 165.2 ± 6.28 = (158.92, 171.48)

The confidence interval is between 158.92 pounds and 171.48 pounds. There is a 95% confidence that the sample has a mean between 158.92 pounds and 171.48 pounds

4 0
2 years ago
QUESTION 6, Saturday, October 10th, 2020
vekshin1

Answer:

∠JTS≅∠RST

Step-by-step explanation:

ss already there, just needs the angle in the middle

3 0
3 years ago
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3a=1<br> What is a equal to?
miskamm [114]

Answer:

1/3

Step-by-step explanation:

3a = 1

/3    /3

a = 1/3

6 0
3 years ago
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Plz help asap<br> Calculate: 3•7=<br> A. -4<br> B. 4<br> C. 10<br> D. 21
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The answer is D. 21 because your multiplying 3 and 7
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Please help me it needs to be turned in tonight
Katarina [22]

Answer:

Step-by-step explanation:

1) x=14 y=40

2)a=10 b=37

3)u=62 v=59

4)s=9 t=14

5)u=66 v=38

hope this helps

6 0
2 years ago
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